US548346A - Arthur ash worth and joshua burger - Google Patents

Arthur ash worth and joshua burger Download PDF

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US548346A
US548346A US548346DA US548346A US 548346 A US548346 A US 548346A US 548346D A US548346D A US 548346DA US 548346 A US548346 A US 548346A
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joshua
burger
worth
ash
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C205/00Compounds containing nitro groups bound to a carbon skeleton
    • C07C205/13Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups
    • C07C205/20Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C07C205/21Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings having nitro groups and hydroxy groups bound to carbon atoms of the same non-condensed six-membered aromatic ring
    • C07C205/22Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by hydroxy groups having nitro groups and hydroxy groups bound to carbon atoms of six-membered aromatic rings having nitro groups and hydroxy groups bound to carbon atoms of the same non-condensed six-membered aromatic ring having one nitro groups bound to the ring

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  • the new product is very valuable for dyeing and printing purposes, producing with iron mordants valuable green and with chrome mordants brown shades.
  • the new dye consisting of grayish to white crystals being easily soluble in water which solution is at first colorless growing darker on standing, is decomposed on addition of caustic alkalies producing green shades with iron mordants and brown shades with chrome mordants and having the properties substantially as heretofore set forth.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

UNITED STATES PATENT OFFICE.
ARTHUR ASHWORTH AND JOSHUA BURGER, OF MANCHESTER, ENGLAND.
NITROSONAPHTHOL DYE AND PROCESS OF MAKING SAME.
SPECIFICATION forming part of Letters Patent No. 548,346, dated October 22, 1895. Application filed August 2, 1894- Serial No. 519,268. (Specimens) Patented in England June 12, 1898, No. 11,556.
To aZZ whom it may concern.-
Be it known that we, ARTHUR AsHWoRTH and JOSHUA Bl 'RGER,Of Manchester, England, have invented a new and useful Method for the Production of new Coloring-Matters Suitable for Dyeing and Printing, (for which a patent has been received in England, No. 11,556, dated June 12, 1893,) of which the following is a specification.
It has been known some time that by the energetic action of sulphurous acid and its salts on nitrosobetanaphthol an amidonaphtholsulfonic acid was produced. We have, however, discovered that by the moderate action of bisulfites another product is obtained which is of great technical value. To prepare this product, we proceed in the following manner: One part, by weight, of nitrosobetanaphtho], by preference in form ofa finely-divided paste, is mixed with two parts, by Weight, of a solution of bisulfite, of soda of about 60 Twaddle, and the mixture is gently heated on the water-bath to about to centigrade, being continuously stirred. When the nitrosobetanaphthol begins to dissolve, the external heating is discontinued and there is a rise in temperature of about 20 centigrade. After some time the whole mass solidifies,forming a paste of silver-gray crystals, which are our new product. The crystals are filtered,
- pressed, and preferably used as a paste.
In this invention we do not limit ourselves to the use of bisulfite of soda; but other bisulfites acting in the same mannercan be used.
Our new compound is easily soluble in Water, forming a colorless solution, which, however, after standing for some time grows darker.
Addition of caustic soda decomposes the aqueous solution, producing a greenprecipitate of the sodium saltof nitrosobetanaphthol.
The new product is very valuable for dyeing and printing purposes, producing with iron mordants valuable green and with chrome mordants brown shades.
The new product of combination between alpha-nitrosobetanaphthol and sodium bisulfite combines with diazo compounds, producing coloring-matters (dyeing, and printing) with mordants, which, however, we do not claim herein, as they form the subject of application, Serial No. 514,096, filed June 9, 1894.
What we claim as new is v 1. The method of producing a new compound which consists in treating nitrosobeta- NOH naphthol with bisulfites at a temperature of about 40 to 50 centigrade, substantially as heretofore set forth.
2. The new dye consisting of grayish to white crystals being easily soluble in water which solution is at first colorless growing darker on standing, is decomposed on addition of caustic alkalies producing green shades with iron mordants and brown shades with chrome mordants and having the properties substantially as heretofore set forth.
ARTHUR ASH'WORTH. JOSHUA BURGER. Witnesses:
ARTHUR O. HALL, JOHN W. THOMAS.
US548346D Arthur ash worth and joshua burger Expired - Lifetime US548346A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841078A (en) * 1953-03-02 1958-07-01 Comstock & Wescott Photographic color correction in imbibition printing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841078A (en) * 1953-03-02 1958-07-01 Comstock & Wescott Photographic color correction in imbibition printing

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